Single-leg, fully cash-collateralized put-writing on Deribit ETH MONTHLY options. This is the last untried cell of the only options family that works here: BTC weekly (promoted, Sharpe 12.2), BTC monthly and ETH weekly are already in the pipeline; ETH monthly is not. Strictly ONE leg — no spreads, no wings, no hedge (L2 compliant). Fills the largest actionable venue gap: options sit at 4.5% vs a 15% quota, and Hyperliquid (L11), COIN-M (data-collection timeouts), funding signals (L13), cross-sectional baskets (L12), liquidation feeds (L3) and cross-venue carry (L1) are all currently blocked, leaving single-leg Deribit as the one under-filled bucket with a proven execution path and confirmed IV/greeks data. ETH is the right underlying for the monthly tenor: its implied-realized spread is structurally wider than BTC's (heavier retail and structured-product put demand, higher vol-of-vol), so the same mechanism runs on a fatter premium. Deliberately kept brief and mechanically simple — 3 tuned parameters, no trend filter — because three of my recent proposals died to token_budget_exceeded from over-specification.